Results are presented on hyperon and antihyperon production in Pb-Pb, pPb and pBe collisions at 158 GeV/c per nucleon. Lambda, Xi and Omega yields have been measured at central rapidity and medium transverse momentum as functions of the centrality of the collision. Comparing the yields in Pb-Pb to those in pBe interactions, strangeness enhancement is observed. The enhancement increases with the centrality and with the strangeness content of the hyperons, reaching a factor of about 20 for the Omega in the central Pb-Pb collisions.
Enhancement of hyperon production at central rapidity in 158 A GeV/c Pb-Pb collisions / Antinori, F., Bacon, P., Badalà, A., Barbera, R., Belogianni, A., Beusch, W., Bloodworth, I.J., Bombara, M., Bruno, G.E., Bull, S.A., Caliandro, R., Campbell, M., Carena, W., Carrer, N., Clarke, R.F., Dainese, A., Di Bari, D., Di Liberto, S., Divià, R., Elia, D., et al.. - In: JOURNAL OF PHYSICS. G, NUCLEAR AND PARTICLE PHYSICS. - ISSN 0954-3899. - STAMPA. - 32:4(2006), pp. 427-441. [10.1088/0954-3899/32/4/003]
Enhancement of hyperon production at central rapidity in 158 A GeV/c Pb-Pb collisions
BRUNO, Giuseppe Eugenio
;
2006
Abstract
Results are presented on hyperon and antihyperon production in Pb-Pb, pPb and pBe collisions at 158 GeV/c per nucleon. Lambda, Xi and Omega yields have been measured at central rapidity and medium transverse momentum as functions of the centrality of the collision. Comparing the yields in Pb-Pb to those in pBe interactions, strangeness enhancement is observed. The enhancement increases with the centrality and with the strangeness content of the hyperons, reaching a factor of about 20 for the Omega in the central Pb-Pb collisions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
